4 papers
Nonperturbative Corrections with Nonlocal Operators to Lifetime Ratios of Beauty Hadrons
J. P. Ma, Z. G. Si
The motion of spectator quarks in decay of a beauty hadron is a nonperturbative effect which can usually be neglected. We find that the motion in some decay channels, which contrib…
I=2 Pion Scattering Length from a Coarse Anisotropic Lattice Calculation
Chuan Liu, Junhua Zhang, Ying Chen +1
Using the tadpole improved clover Wilson quark action on coarse anisotropic lattices, the scattering length in the I=2 channel is calculated within quenched approximation. We…
The Mass Effect in Quarkonium Decay
J. P. Ma
In the NRQCD factorization for productions and decays of a quakonium the difference between the quarkonium mass and the twice of the heavy quark mass is neglected at the leading or…
A Nonperturbative Study of Quarkonium Systems
J. P. Ma, B. H. J. McKellar
Using Nonrelativistic QCD on the lattice we studied the mass spectrum of quarkonium systems nonperturbatively for a range of the bar quark mass. We determined two products of the m…